1 /* 2 * Copyright (C) 2006 Micron Technology Inc. 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 as 6 * published by the Free Software Foundation. 7 */ 8 9 #ifndef _MTD_NAND_OMAP2_H 10 #define _MTD_NAND_OMAP2_H 11 12 #include <linux/mtd/partitions.h> 13 14 #define GPMC_BCH_NUM_REMAINDER 8 15 16 enum nand_io { 17 NAND_OMAP_PREFETCH_POLLED = 0, /* prefetch polled mode, default */ 18 NAND_OMAP_POLLED, /* polled mode, without prefetch */ 19 NAND_OMAP_PREFETCH_DMA, /* prefetch enabled sDMA mode */ 20 NAND_OMAP_PREFETCH_IRQ /* prefetch enabled irq mode */ 21 }; 22 23 enum omap_ecc { 24 /* 25 * 1-bit ECC: calculation and correction by SW 26 * ECC stored at end of spare area 27 */ 28 OMAP_ECC_HAM1_CODE_SW = 0, 29 30 /* 31 * 1-bit ECC: calculation by GPMC, Error detection by Software 32 * ECC layout compatible with ROM code layout 33 */ 34 OMAP_ECC_HAM1_CODE_HW, 35 /* 4-bit ECC calculation by GPMC, Error detection by Software */ 36 OMAP_ECC_BCH4_CODE_HW_DETECTION_SW, 37 /* 4-bit ECC calculation by GPMC, Error detection by ELM */ 38 OMAP_ECC_BCH4_CODE_HW, 39 /* 8-bit ECC calculation by GPMC, Error detection by Software */ 40 OMAP_ECC_BCH8_CODE_HW_DETECTION_SW, 41 /* 8-bit ECC calculation by GPMC, Error detection by ELM */ 42 OMAP_ECC_BCH8_CODE_HW, 43 /* 16-bit ECC calculation by GPMC, Error detection by ELM */ 44 OMAP_ECC_BCH16_CODE_HW, 45 }; 46 47 struct gpmc_nand_regs { 48 void __iomem *gpmc_status; 49 void __iomem *gpmc_nand_command; 50 void __iomem *gpmc_nand_address; 51 void __iomem *gpmc_nand_data; 52 void __iomem *gpmc_prefetch_config1; 53 void __iomem *gpmc_prefetch_config2; 54 void __iomem *gpmc_prefetch_control; 55 void __iomem *gpmc_prefetch_status; 56 void __iomem *gpmc_ecc_config; 57 void __iomem *gpmc_ecc_control; 58 void __iomem *gpmc_ecc_size_config; 59 void __iomem *gpmc_ecc1_result; 60 void __iomem *gpmc_bch_result0[GPMC_BCH_NUM_REMAINDER]; 61 void __iomem *gpmc_bch_result1[GPMC_BCH_NUM_REMAINDER]; 62 void __iomem *gpmc_bch_result2[GPMC_BCH_NUM_REMAINDER]; 63 void __iomem *gpmc_bch_result3[GPMC_BCH_NUM_REMAINDER]; 64 void __iomem *gpmc_bch_result4[GPMC_BCH_NUM_REMAINDER]; 65 void __iomem *gpmc_bch_result5[GPMC_BCH_NUM_REMAINDER]; 66 void __iomem *gpmc_bch_result6[GPMC_BCH_NUM_REMAINDER]; 67 }; 68 69 struct omap_nand_platform_data { 70 int cs; 71 struct mtd_partition *parts; 72 int nr_parts; 73 bool dev_ready; 74 bool flash_bbt; 75 enum nand_io xfer_type; 76 int devsize; 77 enum omap_ecc ecc_opt; 78 struct gpmc_nand_regs reg; 79 80 /* for passing the partitions */ 81 struct device_node *of_node; 82 struct device_node *elm_of_node; 83 }; 84 #endif 85